JP6245254B2 - Position estimation apparatus, position estimation method, target terminal, communication method, communication terminal, recording medium, and position estimation system - Google Patents

Description

  The present disclosure relates to a position estimation device, a position estimation method, a target terminal, a communication method, a communication terminal, a recording medium, and a position estimation system.

  In recent years, when a target terminal receives a radio signal transmitted from a base station, a technique for estimating the position of the target terminal based on the position information of the base station has been disclosed (for example, see Patent Document 1). In this technique, when the MAC (Media Access Control) address of the base station included in the radio signal received by the target terminal is transmitted to the position estimation device, the position estimation device obtains the position information of the base station from the MAC address of the base station. The position of the target terminal is estimated based on the position information of the base station.

  However, depending on the type of OS (Operating System) executed in the target terminal, the MAC address of the base station may not be acquired from a radio signal by an application running on the OS.

  On the other hand, when a base station around the target terminal receives a radio signal transmitted from the target terminal, there is a technique for estimating the position of the target terminal based on position information of the surrounding base station. In this technology, when the target terminal transmits a wireless signal including its own MAC address to the surroundings, the MAC address of the target terminal is transmitted from the surrounding base station that has received the MAC address of the target terminal to the position estimation device. . The position estimation device estimates the position of the target terminal based on the position information of the surrounding base station that has transmitted the MAC address of the target terminal.

JP 2008-104029 A

  However, if a wireless signal including the MAC address of the target terminal is transmitted to the surroundings, information about the user of the target terminal may be acquired by another person, which may lead to infringement of the user's privacy. Therefore, when estimating the position of the target terminal, it is desirable to realize a technique capable of reducing the possibility that information related to the user of the target terminal will be acquired by another person.

  According to the present disclosure, an identification information providing unit that provides temporarily issued predetermined identification information to a target terminal, a data acquisition unit that acquires transmission data transmitted from a communication terminal that has received a radio signal, and the transmission When the identification information included in the data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position estimation that estimates the position of the target terminal based on the position information of the communication terminal And a position estimation device.

  Further, according to the present disclosure, provision of predetermined identification information temporarily issued to a target terminal, acquisition of transmission data transmitted from a communication terminal that has received a radio signal, and inclusion in the transmission data When the identification information to be transmitted is the predetermined identification information notified from the target terminal to the communication terminal by the wireless signal, the position of the target terminal is estimated based on the position information of the communication terminal. A position estimation method is provided.

  In addition, according to the present disclosure, the computer acquires an identification information providing unit that provides the target terminal with predetermined identification information that is temporarily issued, and data acquisition that acquires transmission data transmitted from the communication terminal that has received the wireless signal. And when the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal based on the position information of the communication terminal There is provided a computer-readable recording medium on which a program for causing a function to function as a position estimation device is provided.

  Further, according to the present disclosure, in a target terminal that can communicate with a position estimation device that receives transmission data including predetermined identification information temporarily issued from a communication terminal and estimates the position of the target terminal, Provided is a target terminal comprising: an identification information acquisition unit that acquires issued predetermined identification information from a position estimation device; and a transmission control unit that controls the predetermined identification information to be notified to a communication terminal by a radio signal. The

  Further, according to the present disclosure, in the communication method of the target terminal that can communicate with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal, A communication method is provided, including: acquiring predetermined identification information temporarily issued from a position estimation device; and controlling the predetermined identification information to be notified to a communication terminal by a radio signal.

  In addition, according to the present disclosure, in a target terminal capable of communicating with a position estimation device that receives transmission data including predetermined identification information temporarily issued from a communication terminal and estimates the position of the target terminal, As a target terminal comprising: an identification information acquisition unit that acquires temporarily issued predetermined identification information from a position estimation device; and a transmission control unit that controls the predetermined identification information to be notified to a communication terminal by a radio signal A computer-readable recording medium on which a program for functioning is recorded is provided.

  Further, according to the present disclosure, when the reception control unit that controls to receive a wireless signal and the predetermined identification information temporarily issued from the target terminal by the wireless signal, the predetermined identification information There is provided a communication terminal comprising: a transmission control unit that controls transmission data including the identification information as transmission information to the position estimation device.

  In addition, according to the present disclosure, control is performed so that a radio signal is received, and when the predetermined identification information temporarily issued is notified from the target terminal by the radio signal, the predetermined identification information is included. Controlling the transmission data to be transmitted to the position estimation device.

  Further, according to the present disclosure, when the computer is controlled so that a wireless signal is received, and the predetermined identification information temporarily issued is notified from the target terminal by the wireless signal, Provided is a computer-readable recording medium that records a program for causing a communication terminal to function as a communication terminal including a transmission control unit that controls transmission data including predetermined identification information to be transmitted to a position estimation device. .

  Moreover, according to this indication, it has a position estimation apparatus, a target terminal, and a communication terminal, The said position estimation apparatus provides the identification information provision part which provides predetermined | prescribed identification information issued temporarily to a target terminal, A data acquisition unit that acquires transmission data transmitted from a communication terminal that has received a radio signal; and the predetermined identification in which identification information included in the transmission data is notified from the target terminal to the communication terminal by the radio signal A position estimation unit that estimates the position of the target terminal based on the position information of the communication terminal, the target terminal acquires the predetermined identification information from the position estimation device. And a transmission control unit that controls the predetermined identification information to be notified to the communication terminal by the radio signal, and the communication terminal controls the radio signal to be received And a transmission control unit that controls transmission data including the predetermined identification information as identification information to be transmitted to the position estimation device when the predetermined identification information is notified from the target terminal by the radio signal. A position estimation system including a control unit.

  As described above, according to the present disclosure, when estimating the position of the target terminal, it is possible to reduce the possibility that information related to the user of the target terminal is acquired by another person.

It is a figure which shows the structural example of the position estimation system which concerns on 1st Embodiment of this indication. It is a figure which shows the function structural example of the position estimation apparatus which concerns on 1st Embodiment of this indication. 7 is a flowchart illustrating an operation example of the position estimation device according to the first embodiment of the present disclosure. It is a figure which shows the function structural example of the target terminal which concerns on 1st Embodiment of this indication. It is a figure which shows the example of the tethering setting screen displayed by the output part of an object terminal. 5 is a flowchart illustrating an operation example of a target terminal according to the first embodiment of the present disclosure. FIG. 3 is a diagram illustrating a functional configuration example of a communication terminal according to the first embodiment of the present disclosure. 6 is a flowchart illustrating an operation example of the communication terminal according to the first embodiment of the present disclosure. 6 is a sequence diagram illustrating an operation example of the position estimation system according to the first embodiment of the present disclosure (when the communication terminal receives a predetermined SSID by a radio signal). FIG. FIG. 6 is a sequence diagram illustrating an operation example of the position estimation system according to the first embodiment of the present disclosure (when a communication terminal receives an SSID other than a predetermined SSID by a radio signal). It is a figure which shows the structural example of the position estimation system which concerns on 2nd Embodiment of this indication. It is a figure which shows the function structural example of the position estimation apparatus which concerns on 2nd Embodiment of this indication. 14 is a flowchart illustrating an operation example of the position estimation device according to the second embodiment of the present disclosure. It is a sequence diagram which shows the operation example (when a communication terminal receives predetermined | prescribed SSID with a radio signal) of the position estimation system which concerns on 2nd Embodiment of this indication. It is a figure which shows the hardware structural example of a position estimation apparatus. It is a figure which shows the hardware structural example of an object terminal and a communication terminal.

  Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  In the present specification and drawings, a plurality of constituent elements having substantially the same functional configuration may be distinguished by attaching different alphabets or numbers after the same reference numeral. However, when it is not necessary to particularly distinguish each of a plurality of constituent elements having substantially the same functional configuration, only the same reference numerals are given.

Further, the “DETAILED DESCRIPTION OF THE INVENTION” will be described according to the following item order.
1. 1. First embodiment 1-1. Configuration example of position estimation system 1-2. Functional configuration example of position estimation apparatus 1-3. Example of operation of position estimation apparatus 1-4. Functional configuration example of target terminal 1-5. Example of operation of target terminal 1-6. Functional configuration example of communication terminal 1-7. Operation example of communication terminal 1-8. 1. Operation example of position estimation system Second embodiment 2-1. Configuration example of position estimation system 2-2. Functional configuration example of position estimation apparatus 2-3. Example of operation of position estimation apparatus 2-4. 2. Operation example of position estimation system 3. Hardware configuration example Conclusion

<< 1. First Embodiment >>
First, the first embodiment of the present disclosure will be described.

[1-1. Configuration example of position estimation system]
First, a configuration example of the position estimation system 1A according to the first embodiment of the present disclosure will be described. FIG. 1 is a diagram illustrating a configuration example of a position estimation system 1A according to the first embodiment of the present disclosure. As illustrated in FIG. 1, the position estimation system 1 </ b> A includes a position estimation device 10 </ b> A, a target terminal 20, and a communication terminal 30.

  The position estimation device 10 </ b> A can perform information processing in accordance with a request from the target terminal 20, and can return a processing result to the target terminal 20. Similarly, the position estimation device 10 </ b> A can perform information processing in accordance with a request from the communication terminal 30 and return a processing result to the communication terminal 30. In the example shown in FIG. 1, all of the functions of the position estimation device 10A are integrated, but some of the functions of the position estimation device 10A (for example, the identification information providing unit 111) It may be configured separately from the part.

  The target terminal 20 is a terminal operated by a user. In the following description, a case where the target terminal 20 is applied to a smartphone will be described as an example, but the target terminal 20 may be applied to a device other than a smartphone. For example, the target terminal 20 is applied to a video camera, a digital camera, a PDA (Personal Digital Assistant), a PC (Personal Computer), a mobile phone, a portable music playback device, a portable video processing device, a portable game device, and the like. Also good.

  The communication terminal 30 is a terminal that exists around the target terminal 20. In the example illustrated in FIG. 1, the position estimation system 1 </ b> A includes one communication terminal 30, but the position estimation system 1 </ b> A may include a plurality of communication terminals 30. In the following description, a case where the communication terminal 30 is applied to a mobile phone will be described as an example, but the target terminal 20 may be applied to a device other than a mobile phone. For example, the target terminal 20 may be applied to a video camera, a digital camera, a smartphone, a PDA, a PC, a portable music playback device, a portable video processing device, a portable game device, or the like. In the example illustrated in FIG. 1, the communication terminal 30 is a mobile terminal, but may be a fixed terminal.

  The base station 40 relays communication between communication devices. For example, the base station 40 relays wireless communication by the target terminal 20 or the communication terminal 30 within the radio wave reachable range, or communicates with the communication device connected to the target terminal 20 or the communication terminal 30 and the base station 40 by wire. Can be relayed. Specifically, the base station 40 may be a wireless LAN (Local Area Network) base station. In the example illustrated in FIG. 1, the position estimation system 1A includes one base station 40. However, the position estimation system 1A may include a plurality of base stations 40 or may not include the base station 40. Good.

  In addition, the base station 40 can periodically transmit a beacon signal for informing the surroundings of the presence of the base station 40. The beacon signal includes, for example, an identifier of a base station that is uniquely given to the base station 40. As a result, the communication terminal 30 can confirm the presence of the base station 40 existing in the vicinity based on the identifier of the base station that transmitted the beacon signal received by itself. Similarly, the target terminal 20 can confirm the presence of the base stations 40 present in the vicinity based on the identifier of the base station that transmitted the beacon signal received by the target terminal 20. The identifier of the base station 40 is, for example, a MAC (Media Access Control) address of the base station 40.

  Here, when the base station 40 around the target terminal 20 receives a radio signal transmitted from the target terminal 20, the position estimation device 10 </ b> A determines the position of the target terminal 20 based on the position information of the surrounding base station 40. There is also a technique for estimating. However, if a wireless signal including the MAC address of the target terminal 20 is transmitted to the surroundings, information about the user of the target terminal 20 may be acquired by another person, which may lead to infringement of the user's privacy. is there.

  Therefore, in the present specification, a technique is proposed that can reduce the possibility that information related to the user of the target terminal 20 will be acquired by another person when the position estimation device 10A estimates the position of the target terminal 20. .

[1-2. Example of functional configuration of position estimation device]
Subsequently, a functional configuration example of the position estimation device 10A according to the first embodiment of the present disclosure will be described. FIG. 2 is a diagram illustrating a functional configuration example of the position estimation device 10A according to the first embodiment of the present disclosure. As illustrated in FIG. 2, the position estimation device 10A according to the first embodiment of the present disclosure includes a control unit 110A, a storage unit 120, and a communication unit 130.

  The control unit 110A corresponds to a processor such as a CPU (Central Processing Unit), for example. 110 A of control parts exhibit the various functions which the control part 110 has by executing the program memorize | stored in the memory | storage part 120 or another storage medium. 110 A of control parts have the identification information provision part 111, the data acquisition part 112, and the position estimation part 113A. The functions of each of these functional blocks will be described later.

  The storage unit 120 stores a program for operating the control unit 110 using a storage medium such as a semiconductor memory or a hard disk. For example, the storage unit 120 can also store various data used by the program. In the example illustrated in FIG. 2, the storage unit 120 is integrated with the position estimation device 10 </ b> A, but the storage unit 120 may be configured separately from the position estimation device 10 </ b> A.

  The communication unit 130 can communicate with other devices (for example, the target terminal 20, the communication terminal 30, the base station 40, etc.). For example, the communication unit 130 can perform communication via the base station 40 when performing communication between the target terminal 20 and the communication terminal 30. The communication format by the communication unit 130 is not particularly limited, and the communication by the communication unit 130 may be wireless communication or wired communication. In the example illustrated in FIG. 2, the communication unit 130 is integrated with the position estimation device 10 </ b> A, but the communication unit 130 may be configured separately from the position estimation device 10 </ b> A.

  Here, as described above, if a wireless signal including the MAC address of the target terminal 20 is transmitted to the surroundings, there is a possibility that information regarding the user of the target terminal 20 may be acquired by another person, and the privacy of the user There is also a risk of infringement. Therefore, in the embodiment of the present disclosure, the identification information temporarily issued by the position estimation device 10A is used.

  Specifically, the identification information providing unit 111 temporarily issues predetermined identification information, and provides the temporarily issued predetermined identification information to the target terminal 20. In the following, a case where an SSID (Service Set Identifier) is used as identification information will be described, but the identification information may be other than SSID. The predetermined identification information may be identification information including a predetermined character string determined in advance at a predetermined position (for example, identification information in which the first three characters are “kzt”), or arbitrary identification information. There may be.

  The identification information providing unit 111 may add the issued predetermined identification information to the temporarily issued list of predetermined identification information. The list may be provided to the communication terminal 30 by the identification information providing unit 111. The timing at which the list is provided to the communication terminal 30 is not particularly limited. For example, the identification information providing unit 111 may periodically provide the list to the communication terminal 30 or may provide the list to the communication terminal 30 in response to a request from the communication terminal 30.

  In the following, a predetermined SSID is used as the predetermined identification information, but the predetermined identification information may be other than the SSID. The timing at which the predetermined SSID is provided to the target terminal 20 by the identification information providing unit 111 is not particularly limited. For example, the identification information providing unit 111 may issue a predetermined SSID and provide it to the target terminal 20 when an SSID is issued from the target terminal 20.

  For example, the predetermined SSID issued by the identification information providing unit 111 may be registered in association with the terminal identification information of the target terminal 20 (for example, session information set between the target terminal 20 and the like). Then, when identifying the destination of the estimation result by the position estimation unit 113A, terminal identification information associated with a predetermined SSID included in transmission data transmitted from the communication terminal 30 may be used.

  In such a case, the predetermined SSID is used to identify the target terminal 20 to which the position estimation result is provided. Therefore, it is preferable that the SSID is issued uniquely to the target terminal 20. The session information may be a session key, cookie information, or a UUID (universally unique identifier).

  On the other hand, the communication terminal 30 receives a radio signal. Various types of wireless signals are assumed as the wireless signals received by the communication terminal 30. For example, the communication terminal 30 can also receive a radio signal transmitted from the base station 40 and can also receive a radio signal transmitted from the target terminal 20. The data acquisition unit 112A acquires transmission data transmitted from the communication terminal 30 that has received the wireless signal.

  When the SSID included in the transmission data is a predetermined SSID notified from the target terminal 20 to the communication terminal 30 by a radio signal, the position estimation unit 113A estimates the position of the target terminal 20 based on the position information of the communication terminal 30. To do. For example, when the communication terminal 30 is a fixed terminal, the position information of the communication terminal 30 may be registered in the position estimation device 10A in advance, or when the communication terminal 30 is a mobile terminal. The position information of the communication terminal 30 may be notified from the communication terminal 30 to the position estimation device 10A by transmission data.

  Various methods can be employed as a method for estimating the position of the target terminal 20. For example, the position estimation unit 113A may specify the position information of the communication terminal 30 as the position information of the target terminal 20. Alternatively, the position estimation unit 113A may estimate the position of the target terminal 20 based on the reception intensity and the position information of the communication terminal 30 when the transmission data includes the reception intensity of the radio signal in the communication terminal 30. . For example, the position estimation unit 113 </ b> A may calculate a distance according to the reception intensity and estimate a position that is away from the position of the communication terminal 30 by the distance as the position of the target terminal 20. For example, when the wireless signal has directivity, the position estimation unit 113A estimates a position that is traced back from the position of the communication terminal 30 in the direction of the wireless signal transmission source as the position of the target terminal 20. May be. For example, the position estimation unit 113A can narrow down the direction of the target terminal 20 when the communication terminal 30 is located near the wall. In addition, a method described in the second embodiment of the present disclosure may be employed.

  The format of the position information is not particularly limited. That is, the position information may be, for example, latitude and longitude, a format using polar coordinates, or a format using vectors. Further, position information unique to a predetermined area used in the predetermined area may be used. For example, the location information may be location information unique to a facility used inside a predetermined facility (for example, inside a facility such as a zoo or a museum).

  For example, a predetermined SSID temporarily issued by the identification information providing unit 111 may be invalidated at a predetermined timing. That is, the identification information providing unit 111 may revoke the predetermined SSID when a predetermined revocation condition is satisfied after the predetermined SSID is issued. As described above, when the predetermined SSID is revoked, the identification information providing unit 111 may delete the revoked predetermined SSID from the list. Further, when the predetermined SSID is revoked by the identification information providing unit 111, the communication unit 130 may transmit a revocation notification to the target terminal 20.

  Here, the predetermined revocation conditions are not particularly limited. For example, the predetermined revocation condition may be a condition that a predetermined time has elapsed after issuing a predetermined SSID. In such a case, the predetermined time may be determined in advance.

  Further, the predetermined revocation condition may be a condition that the position of the target terminal 20 is out of a predetermined area. Here, the predetermined area is not particularly limited. For example, the predetermined area may be inside the predetermined facility when position information inside the predetermined facility is registered in advance in the position estimation apparatus 10A. For example, when the target terminal 20 exists in a predetermined area, information corresponding to the position of the target terminal 20 is output (for example, a display device installed near the position of the target terminal 20 relates to an event. It is also assumed that an advertisement is displayed. Alternatively, the predetermined revocation condition may be a condition that the target terminal 20 has entered a predetermined area (for example, an area near the exit of the facility). As the position of the target terminal 20, the position estimated by the position estimation unit 113A may be used.

  In addition, when an application that uses the position of the target terminal 20 is being executed, it may be assumed that it is not necessary to estimate the position of the target terminal 20 when the execution of the application ends. Therefore, the predetermined revocation condition may be a condition that the execution of an application that uses the position of the target terminal 20 has ended. An application that uses the position of the target terminal 20 is not particularly limited. For example, an application that uses the position of the target terminal 20 may be executed on the target terminal 20 or may be executed on a terminal other than the target terminal 20.

  In addition, when the user inputs an operation for revoking the predetermined SSID, the predetermined SSID may be revoked. That is, the predetermined revocation condition may be a condition that a predetermined operation is input from the user to the target terminal 20. The predetermined operation may be an operation assigned in advance to an operation for invalidating the predetermined SSID. For example, the predetermined operation may be an operation for selecting a predetermined object displayed by the target terminal 20.

  It is assumed that the SSID included in the transmission data acquired by the data acquisition unit 112 is other than a predetermined SSID. The operation of the position estimation apparatus 10A in such a case is not particularly limited. For example, when the SSID included in the transmission data is other than a predetermined SSID, the position estimation unit 113A estimates the position of the communication terminal 30 based on the position information of the base station 40 that transmitted the radio signal to the communication terminal 30. Good. For example, if the identifier of the base station 40 that transmitted the radio signal to the communication terminal 30 is included in the transmission data, the location estimation unit 113A associates the base station 40 registered in advance with the identifier of the base station 40. The position information of the station 40 may be used.

  Various methods can be employed as a method for estimating the position of the communication terminal 30. For example, the position estimation unit 113A may specify the position information of the base station 40 as the position information of the communication terminal 30. Alternatively, the position estimation unit 113 </ b> A may estimate the position of the communication terminal 30 based on the reception strength and the position information of the base station 40 when the transmission data includes the reception strength of the radio signal in the communication terminal 30. . For example, the position estimation unit 113 </ b> A may calculate a distance according to the reception intensity and estimate a position away from the position of the base station 40 by the distance as the position of the communication terminal 30.

  In addition, when there are a plurality of base stations 40 that have transmitted radio signals to the communication terminal 30, the position estimation unit 113A estimates the position of the communication terminal 30 based on the position information of each of the plurality of base stations 40. May be. For example, the position estimation unit 113A uses the triangulation principle based on the position information of each of the plurality of base stations 40 and the reception strength of the radio signal transmitted from each of the plurality of base stations 40 at the communication terminal 30. 30 positions may be estimated. In addition, when the communication terminal 30 has a positioning function using GPS (Global Positioning System), the position estimation unit 113A may perform self-position estimation using the positioning function, or the communication terminal 30 may When an acceleration sensor is provided, self-position estimation using data detected by the acceleration sensor may be performed.

  As described above, in the embodiment of the present disclosure, the position estimation device 10A provides the temporarily issued predetermined identification information to the target terminal 20, and the target terminal 20 receives the predetermined information provided from the position estimation device 10A. The identification information is transmitted to the communication terminal 30. Therefore, since a wireless signal including the MAC address of the target terminal 20 is not transmitted to the surroundings, it is possible to reduce the possibility that information related to the user of the target terminal 20 is acquired by another person, leading to infringement of the user's privacy. The possibility of being lost can be reduced.

[1-3. Example of operation of position estimation apparatus]
Subsequently, an operation example of the position estimation device 10A according to the first embodiment of the present disclosure will be described. FIG. 3 is a diagram illustrating an operation example of the position estimation device 10A according to the first embodiment of the present disclosure. Note that the operation example of the position estimation device 10A illustrated in FIG. 3 is merely an example of the operation of the position estimation device 10A. Therefore, the operation of the position estimation device 10A is not limited to the operation example of the position estimation device 10A shown in FIG.

  As illustrated in FIG. 3, when the request is received by the communication unit 130, the identification information providing unit 111 determines whether an SSID issue request is made from the target terminal 20 (S 1). When the SSID issuance request is not made from the target terminal 20 (“NO” in S1), the identification information providing unit 111 proceeds to S4. On the other hand, when the SSID issuance request is made from the target terminal 20 (“YES” in S1), the identification information providing unit 111 issues a temporary SSID (predetermined SSID) (S2) and uses the predetermined SSID as the target terminal. (S3). The issued predetermined SSID can be stored in the storage unit 120.

  Subsequently, when the transmission data is not acquired by the data acquisition unit 112 (“NO” in S4), the identification information providing unit 111 proceeds to S10. On the other hand, when the transmission data transmitted from the communication terminal 30 is received by the communication unit 130 and the transmission data is acquired by the data acquisition unit 112 (“YES” in S4), the position estimation unit 113A proceeds to S5.

  Subsequently, when the SSID included in the transmission data is a predetermined SSID (“YES” in S5), the position estimation unit 113A estimates the position of the target terminal 20 based on the position information of the communication terminal 30, and estimates The result is provided to the target terminal 20 (S7). On the other hand, when the SSID included in the transmission data is other than the predetermined SSID (“NO” in S5), the position estimation unit 113A estimates the position of the communication terminal 30 based on the position information of the base station 40, and estimates The result is provided to the communication terminal 30 (S9).

  Subsequently, if the predetermined revocation condition is not satisfied (“NO” in S10), the identification information providing unit 111 ends the operation, but if the predetermined revocation condition is satisfied (“YES” in S10) ”), The predetermined SSID is expired (S11), and the operation is terminated. Instead of ending the operation, the operation may return to S1, or another operation may be performed.

[1-4. Example of functional configuration of target terminal]
Subsequently, a functional configuration example of the target terminal 20 according to the first embodiment of the present disclosure will be described. FIG. 4 is a diagram illustrating a functional configuration example of the target terminal 20 according to the first embodiment of the present disclosure. As illustrated in FIG. 4, the target terminal 20 according to the first embodiment of the present disclosure includes a control unit 210, an input unit 220, a storage unit 230, a communication unit 240, and an output unit 250.

  The control unit 210 corresponds to a processor such as a CPU (Central Processing Unit), for example. The control unit 210 performs various functions of the control unit 210 by executing a program stored in the storage unit 230 or another storage medium. The control unit 210 includes an identification information acquisition unit 211 and a transmission control unit 212. The functions of each of these functional blocks will be described later.

  The input unit 220 detects a user operation and outputs it to the control unit 210. In this specification, since the case where the input part 220 is comprised with a touch panel is assumed, user operation is input using a user's finger | toe as an operating body. However, the input unit 220 may be configured by hardware other than the touch panel. In the example illustrated in FIG. 4, the input unit 220 is integrated with the target terminal 20, but the input unit 220 may be configured separately from the target terminal 20.

  The storage unit 230 stores a program for operating the control unit 210 using a storage medium such as a semiconductor memory or a hard disk. Further, for example, the storage unit 230 can store various data used by the program. In the example illustrated in FIG. 4, the storage unit 230 is integrated with the target terminal 20, but the storage unit 230 may be configured separately from the target terminal 20.

  The communication unit 240 can communicate with other devices (for example, the position estimation device 10A, the communication terminal 30, the base station 40, etc.). For example, when communicating with the position estimation apparatus 10 </ b> A, the communication unit 240 can perform communication via the base station 40. The communication format by the communication unit 240 is not particularly limited, and the communication by the communication unit 240 may be wireless communication. In the example illustrated in FIG. 4, the communication unit 240 is integrated with the target terminal 20, but the communication unit 240 may be configured separately from the target terminal 20.

  The output unit 250 has a function of outputting various information according to control by the control unit 210. The type of information output by the output unit 250 is not particularly limited. Therefore, the information output by the output unit 250 may be an image (for example, a still image or a moving image) or a sound. In the following description, it is assumed that the output unit 250 is a display device, but the output unit 250 may be another output device (for example, an audio output device). In the example illustrated in FIG. 4, the output unit 250 is integrated with the target terminal 20, but the output unit 250 may be configured separately from the target terminal 20.

  As described above, in the embodiment of the present disclosure, the identification information temporarily issued by the position estimation device 10A is used. Therefore, in the target terminal 20, the identification information acquisition unit 211 acquires the predetermined SSID that has been temporarily issued from the position estimation device 10A. For example, the identification information acquisition unit 211 provides an SSID issue request to the position estimation device 10A, and acquires a predetermined SSID from the position estimation device 10A as a response. Then, the transmission control unit 212 performs control so that the predetermined SSID is notified to the communication terminal 30 by a radio signal.

  Thereafter, the position of the target terminal 20 is determined by the position estimation device 10A based on the position information of the communication terminal 30 when the identification information included in the transmission data transmitted from the communication terminal 30 to the position estimation device 10A is a predetermined SSID. Presumed. Here, the timing at which the SSID issue request is provided to the position estimation apparatus 10A by the identification information acquisition unit 211 is not particularly limited. For example, when a predetermined operation for position estimation is input by the user of the target terminal 20, the identification information acquisition unit 211 may provide an SSID issue request to the position estimation device 10A. For example, the user can input a predetermined operation using a Web browser.

  The predetermined SSID provided from the position estimation device 10A is controlled to be notified to the communication terminal 30 by a radio signal, but such notification may be made in any way. For example, the transmission control unit 212 may perform control so that a predetermined SSID is notified to the communication terminal 30 by the tethering function. Here, the tethering function may be a function of connecting another terminal to a network such as the Internet using the communication function of the terminal.

  FIG. 5 is a diagram illustrating an example of a tethering setting screen displayed by the output unit 250 of the target terminal 20. As illustrated in FIG. 5, for example, when the predetermined SSID provided from the position estimation apparatus 10 </ b> A is “kzt0123”, the predetermined SSID “kzt0123” is set in the setting field 251 of the tethering setting screen. Subsequently, when a predetermined operation for starting tethering is performed by the user, tethering is started with the predetermined SSID set in the setting field 251 as the SSID. As a result, the predetermined SSID is notified to the communication terminal 30 by a radio signal.

[1-5. Example of operation of target terminal]
Subsequently, an operation example of the target terminal 20 according to the first embodiment of the present disclosure will be described. FIG. 6 is a diagram illustrating an operation example of the target terminal 20 according to the first embodiment of the present disclosure. Note that the operation example of the target terminal 20 illustrated in FIG. 6 is merely an example of the operation of the target terminal 20. Therefore, the operation of the target terminal 20 is not limited to the operation example of the target terminal 20 illustrated in FIG.

  As illustrated in FIG. 6, when an SSID issuance operation is performed (“YES” in S21), the identification information acquisition unit 211 provides an SSID issuance request to the position estimation device 10A (S22). Subsequently, the identification information acquisition unit 211 acquires a predetermined SSID from the position estimation apparatus 10A (S23), and the transmission control unit 212 notifies the communication terminal 30 of the predetermined SSID by a radio signal (S24). When the SSID issue operation is not performed (“NO” in S21), the operation is terminated. Instead of the operation being terminated, the operation may return to S21 or another operation may be performed.

[1-6. Example of functional configuration of communication terminal]
Subsequently, a functional configuration example of the communication terminal 30 according to the first embodiment of the present disclosure will be described. FIG. 7 is a diagram illustrating a functional configuration example of the communication terminal 30 according to the first embodiment of the present disclosure. As illustrated in FIG. 7, the communication terminal 30 according to the first embodiment of the present disclosure includes a control unit 310, an input unit 320, a storage unit 330, a communication unit 340, and an output unit 350.

  The control unit 310 corresponds to a processor such as a CPU (Central Processing Unit), for example. The control unit 310 exhibits various functions of the control unit 310 by executing a program stored in the storage unit 330 or another storage medium. The control unit 310 includes a reception control unit 311, a positioning control unit 312, and a transmission control unit 313. The functions of each of these functional blocks will be described later.

  The input unit 320 detects a user operation and outputs it to the control unit 310. In this specification, since the case where the input part 320 is comprised with a touch panel is assumed, user operation is input by using a user's finger | toe as an operating body. However, the input unit 320 may be configured by hardware other than the touch panel. In the example illustrated in FIG. 7, the input unit 320 is integrated with the communication terminal 30, but the input unit 320 may be configured separately from the communication terminal 30.

  The storage unit 330 stores a program for operating the control unit 310 using a storage medium such as a semiconductor memory or a hard disk. For example, the storage unit 330 can also store various data used by the program. In the example illustrated in FIG. 7, the storage unit 330 is integrated with the communication terminal 30, but the storage unit 330 may be configured separately from the communication terminal 30.

  The communication unit 340 can communicate with other devices (for example, the position estimation device 10A, the target terminal 20, the base station 40, etc.). For example, the communication unit 340 can perform communication via the base station 40 when performing communication with the position estimation apparatus 10A. The communication format by the communication unit 340 is not particularly limited, and the communication by the communication unit 340 may be wireless communication. In the example illustrated in FIG. 7, the communication unit 340 is integrated with the communication terminal 30, but the communication unit 340 may be configured separately from the communication terminal 30.

The output unit 350 has a function of outputting various information according to control by the control unit 310. The type of information output by the output unit 350 is not particularly limited. Therefore, the information output by the output unit 350 may be an image (for example, a still image, a moving image, or the like) or a sound. In the following description, it is mainly assumed that the output unit 350 is a display device, but the output unit 350 may be another output device (for example, an audio output device). In the example illustrated in FIG. 7, the output unit 350 is integrated with the communication terminal 30, but the output unit 350 may be configured separately from the communication terminal 30 .

  As described above, in the embodiment of the present disclosure, the identification information temporarily issued by the position estimation device 10A is used. Therefore, in the communication terminal 30, the reception control unit 311 performs control so that a radio signal is received. The transmission control unit 313 transmits the transmission data including the predetermined SSID as the SSID to the position estimation device 10A when the temporarily issued predetermined SSID is notified from the target terminal 20 by a radio signal. Control. The position of the target terminal 20 is estimated by the position estimation device 10A based on the position information of the communication terminal 30 when the SSID notified by the radio signal is a predetermined SSID.

  Various types of radio signals are assumed as the types of radio signals received by the communication terminal 30. For example, the communication terminal 30 may receive a radio signal transmitted from the base station 40 or may receive a radio signal transmitted from the target terminal 20. Therefore, for example, the transmission control unit 313 may determine that the predetermined SSID is notified from the target terminal 20 by the wireless signal when the SSID notified by the wireless signal satisfies the predetermined condition.

  Here, the predetermined condition may be any condition. For example, the predetermined condition may be a condition that the SSID notified by the radio signal includes a predetermined character string. Alternatively, the predetermined condition may be a condition that a predetermined character string in which the SSID notified by the radio signal is determined in advance is included in a predetermined position (for example, “kzt” is included in the first three characters). Good.

  Alternatively, the predetermined condition may be a condition that the SSID notified by the radio signal is included in the temporarily issued list of predetermined SSIDs provided from the position estimation device 10A. As described above, the list may be periodically acquired from the position estimation device 10A, or may be acquired from the position estimation device 10A in response to a request from the communication terminal 30. The request may be made before determining whether or not a predetermined condition is satisfied.

  On the other hand, the transmission control unit 313 may perform any operation when the SSID notified by the radio signal is other than the predetermined SSID. As an example, when the SSID notified by the radio signal is other than the predetermined SSID, the transmission control unit 313 transmits the transmission data including the identifier of the base station 40 that transmitted the radio signal to the position estimation device 10A. You may control as follows. Then, the position of the communication terminal 30 is estimated based on the position information of the base station 40 registered in association with the identifier of the base station 40 in the position estimation device 10A.

  In such a case, the transmission data may not include the identifier of the target terminal 20 that has notified the communication terminal 30 of the predetermined SSID by a wireless signal. It is assumed that the position of the target terminal 20 that has notified the predetermined SSID may not be estimated by the position estimation device 10A, and the position information of the target terminal 20 cannot be used to estimate the position of the communication terminal 30. Because it is done.

  Therefore, when the predetermined SSID is notified from the target terminal 20 by the radio signal having the predetermined SSID of 1 and when the SSID notified by the other radio signal is other than the predetermined SSID, the transmission control unit 313 The transmission data including the identifier of the base station 40 that has transmitted the other radio signal without including the identifier may be controlled so as to be transmitted to the position estimation device 10A.

  Various information can be included in the transmission data. For example, the reception strength of the radio signal received by the communication terminal 30 may be included in the transmission data. That is, when the SSID notified by the radio signal is a predetermined SSID, the transmission control unit 313 performs control so that transmission data including the reception strength of the radio signal and the predetermined SSID is transmitted to the position estimation device 10A. Also good. In such a case, the position estimation apparatus 10A estimates the position of the target terminal 20 based on the reception intensity and the position information of the communication terminal 30.

  For the position estimation of the target terminal 20 in the position estimation apparatus 10 </ b> A, the position information of the communication terminal 30 is used. For example, the position information of the communication terminal 30 may be transmitted from the communication terminal 30. That is, when the SSID notified by the radio signal is the predetermined SSID, the transmission control unit 313 controls the transmission information including the position information of the communication terminal 30 and the predetermined SSID to be transmitted to the position estimation device 10A. May be. Note that when the position information of the communication terminal 30 is registered in advance in the position estimation apparatus 10A, the position information of the communication terminal 30 may not be transmitted to the position estimation apparatus 10A.

  As described above, when the position of the target terminal 20 is estimated, the position information of the communication terminal 30 is used. However, when the communication terminal 30 is a mobile terminal, the communication terminal 30 moves and communicates. The position of the terminal 30 may change. Therefore, when the position of the target terminal 20 is estimated, the positioning interval of the communication terminal 30 may be shortened. That is, the positioning control unit 312 may perform control so that the positioning interval of the communication terminal 30 is shortened when the SSID notified by the radio signal is a predetermined SSID. The positioning method of the communication terminal 30 is not limited, and may be the same method as the position estimation of the target terminal 20 or a different method.

[1-7. Example of communication terminal operation]
Subsequently, an operation example of the communication terminal 30 according to the first embodiment of the present disclosure will be described. FIG. 8 is a diagram illustrating an operation example of the communication terminal 30 according to the first embodiment of the present disclosure. Note that the operation example of the communication terminal 30 illustrated in FIG. 8 is merely an example of the operation of the communication terminal 30. Therefore, the operation of the communication terminal 30 is not limited to the operation example of the communication terminal 30 shown in FIG.

  As illustrated in FIG. 8, when a wireless signal is received by the communication unit 340 (“YES” in S31), the reception control unit 311 proceeds to S32, but a wireless signal is not received by the communication unit 340. ("NO" in S31), the operation is terminated. Instead of the operation being ended, the operation may return to S31 or another operation may be performed.

  Subsequently, when the SSID notified by the radio signal is other than the predetermined SSID (“NO” in S32), the transmission control unit 313 uses the base station 40 as an example of the identifier of the base station 40 that transmitted the radio signal. Is included in the transmission data (S33), and the process proceeds to S36. On the other hand, when the SSID notified by the radio signal is the predetermined SSID (“YES” in S32), the positioning control unit 312 shortens the positioning interval (S34), and the transmission control unit 313 The reception strength of the signal and the position information of the communication terminal 30 are included in the transmission data (S35).

  Subsequently, when the transmission control unit 313 controls the transmission data to be transmitted to the position estimation device 10A, the communication unit 340 transmits the transmission data to the position estimation device 10A according to the control by the transmission control unit 313 (S36). The operation is terminated. Instead of the operation being ended, the operation may return to S31 or another operation may be performed.

[1-8. Example of position estimation system operation]
Subsequently, an operation example of the position estimation system 1A according to the first embodiment of the present disclosure will be described. Here, in particular, an operation example when the communication terminal 30 receives a predetermined SSID by a radio signal will be described. FIG. 9 is a sequence diagram illustrating an operation example of the position estimation system 1A according to the first embodiment of the present disclosure. In particular, FIG. 9 shows an operation example when the communication terminal 30 receives a predetermined SSID by a radio signal. Note that the operation example of the position estimation system 1A shown in FIG. 9 is only an example of the operation of the position estimation system 1A. Therefore, the operation of the position estimation system 1A is not limited to the operation example of the position estimation system 1A shown in FIG.

  First, in the target terminal 20, the identification information acquisition unit 211 provides an SSID issue request. That is, the communication unit 240 transmits an SSID issue request to the position estimation device 10A (S41). In the position estimation device 10A, when the SSID issuance request is received by the communication unit 130 (S42), the identification information providing unit 111 issues a predetermined SSID and provides the issued predetermined SSID. That is, the communication unit 130 transmits the issued predetermined SSID to the target terminal 20 (S43). In the target terminal 20, when the predetermined SSID is received by the communication unit 240, the predetermined SSID is acquired by the identification information acquisition unit 211.

  Subsequently, in the target terminal 20, when the transmission control unit 212 performs control so that the predetermined SSID is transmitted by the radio signal, the communication unit 240 transmits the predetermined SSID to the communication terminal 30 by the radio signal (S45). In the communication terminal 30, when the communication unit 340 receives the predetermined SSID transmitted by the wireless signal (S46), the reception control unit 311 acquires the predetermined SSID from the wireless signal.

  After the predetermined SSID is included in the transmission data by the transmission control unit 313, the transmission data including the predetermined SSID is controlled by the transmission control unit 313 to be transmitted to the position estimation device 10A. The transmission data including the predetermined SSID is transmitted to the position estimation device 10A by the communication unit 340 (S47).

  In the position estimation device 10A, when the transmission data transmitted from the communication terminal 30 is received by the communication unit 130 (S48), the data acquisition unit 112 extracts a predetermined SSID from the transmission data (S49). When the data acquisition unit 112 extracts the predetermined SSID from the transmission data, the position estimation unit 113A estimates the position of the target terminal 20 based on the position information of the communication terminal 30 (S50).

  Subsequently, the position estimating unit 113 </ b> A provides the target terminal 20 with the position information of the target terminal 20. That is, the communication unit 130 transmits the position information of the target terminal 20 to the target terminal 20. In the target terminal 20, when the position information of the target terminal 20 is received by the communication unit 240, the position information of the target terminal 20 is acquired.

  Subsequently, an operation example when the communication terminal 30 receives an SSID other than the predetermined SSID by a radio signal will be described. FIG. 10 is a sequence diagram illustrating an operation example of the position estimation system 1A according to the first embodiment of the present disclosure. In particular, FIG. 10 shows an operation example when the communication terminal 30 receives an SSID other than a predetermined SSID by a radio signal. Note that the operation example of the position estimation system 1A illustrated in FIG. 10 is merely an example of the operation of the position estimation system 1A. Therefore, the operation of the position estimation system 1A is not limited to the operation example of the position estimation system 1A shown in FIG.

  First, the base station 40 transmits an SSID other than the predetermined SSID by a radio signal (S61). In the communication terminal 30, the reception control unit 311 performs control so that an SSID other than the predetermined SSID is received by a radio signal (S62). That is, the communication unit 340 receives an SSID other than the predetermined SSID by a radio signal (S62). The transmission control unit 313 sets the MAC address as transmission data as identification information of the base station 40 that transmitted the radio signal (S63), and the communication unit 340 transmits the transmission data to the position estimation device 10A (S64).

  In the position estimation device 10A, when transmission data is received by the communication unit 130 (S65), the data acquisition unit 112 extracts an SSID other than the predetermined SSID from the transmission data (S66). When the data acquisition unit 112 extracts an SSID other than the predetermined SSID from the transmission data, the position estimation unit 113A estimates the position of the communication terminal 30 based on the position information of the base station 40 (S67).

  Subsequently, the position estimation unit 113A provides the communication terminal 30 with the position information of the communication terminal 30. That is, the communication unit 130 transmits the position information of the communication terminal 30 to the communication terminal 30. In the communication terminal 30, when the communication unit 340 receives the position information of the communication terminal 30, the position information of the communication terminal 30 is acquired.

<< 2. Second Embodiment >>
Next, a second embodiment of the present disclosure will be described. The second embodiment of the present disclosure assumes a case where there are a plurality of communication terminals 30. Note that in the description of the second embodiment of the present disclosure, descriptions of portions that overlap between the first embodiment of the present disclosure and the second embodiment of the present disclosure are omitted.

[2-1. Configuration example of position estimation system]
First, a configuration example of the position estimation system 1B according to the second embodiment of the present disclosure will be described. FIG. 11 is a diagram illustrating a configuration example of a position estimation system 1B according to the second embodiment of the present disclosure. As illustrated in FIG. 11, the position estimation system 1 </ b> B includes a position estimation device 10 </ b> B, a target terminal 20, and a plurality of communication terminals 30. In the example illustrated in FIG. 11, the position estimation system 1B includes three communication terminals 30 (communication terminals 30X, 30Y, and 30Z), but the number of communication terminals 30 included in the position estimation system 1B is not particularly limited.

  The function of the position estimation device 10 is mainly different between the first embodiment of the present disclosure and the second embodiment of the present disclosure. Therefore, below, the function which the position estimation apparatus 10B which concerns on 2nd Embodiment of this indication has is mainly demonstrated.

[2-2. Example of functional configuration of position estimation device]
Subsequently, a functional configuration example of the position estimation device 10B according to the second embodiment of the present disclosure will be described. FIG. 12 is a diagram illustrating a functional configuration example of the position estimation device 10B according to the second embodiment of the present disclosure. As illustrated in FIG. 12, the position estimation device 10B according to the second embodiment of the present disclosure includes a control unit 110B, a storage unit 120, and a communication unit 130.

  The controller 110B corresponds to a processor such as a CPU (Central Processing Unit), for example. The control unit 110B exhibits various functions of the control unit 110B by executing a program stored in the storage unit 120 or another storage medium. The control unit 110B includes an identification information providing unit 111, a data acquisition unit 112B, and a position estimation unit 113B. Here, functions of the data acquisition unit 112B and the position estimation unit 113B will be described.

  The data acquisition unit 112B acquires transmission data transmitted from each of the plurality of communication terminals 30 that have received the radio signal. When the SSID included in the transmission data transmitted from each of the plurality of communication terminals 30 is the predetermined SSID notified from the target terminal 20 to the communication terminal 30 by a radio signal, the position estimation unit 113B The position of the target terminal 20 is estimated based on each position information. For example, when the SSID included in the transmission data transmitted from each of the communication terminals 30X, 30Y, and 30Z is a predetermined SSID, the position estimation unit 113B determines the target terminal based on the position information of each of the communication terminals 30X, 30Y, and 30Z. Twenty positions can be estimated.

  For example, the position estimation unit 113B estimates the position of the target terminal 20 based on the principle of triangulation based on the position information of each of the plurality of communication terminals 30 and the reception strength of the radio signal at each of the plurality of communication terminals 30. Good. For example, the position estimation unit 113B estimates the position of the target terminal 20 based on the principle of triangulation based on the position information of each of the communication terminals 30X, 30Y, and 30Z and the reception strength of the radio signal at each of the communication terminals 30X, 30Y, and 30Z. May be.

[2-3. Example of operation of position estimation apparatus]
Subsequently, an operation example of the position estimation device 10B according to the second embodiment of the present disclosure will be described. FIG. 13 is a diagram illustrating an operation example of the position estimation device 10B according to the second embodiment of the present disclosure. Note that the operation example of the position estimation device 10B illustrated in FIG. 13 is merely an example of the operation of the position estimation device 10B. Therefore, the operation of position estimation apparatus 10B is not limited to the operation example of position estimation apparatus 10B shown in FIG.

  As illustrated in FIG. 3, when the request is received by the communication unit 130, the identification information providing unit 111 determines whether an SSID issue request is made from the target terminal 20 (S 1). If the SSID issuance request is not made from the target terminal 20 (“NO” in S1), the identification information providing unit 111 proceeds to S71. On the other hand, when the SSID issuance request is made from the target terminal 20 (“YES” in S1), the identification information providing unit 111 issues a temporary SSID (predetermined SSID) (S2) and uses the predetermined SSID as the target terminal. (S3).

  Subsequently, when the transmission data transmitted from each of the plurality of communication terminals 30 is not acquired by the data acquisition unit 112 (“NO” in S71), the identification information providing unit 111 proceeds to S10. On the other hand, when the transmission data transmitted from each of the plurality of communication terminals 30 is received by the communication unit 130 and acquired by the data acquisition unit 112 (“YES” in S71), the position estimation unit 113B proceeds to S72.

  Subsequently, when the SSID included in each of the plurality of transmission data is a predetermined SSID (“YES” in S72), the position estimation unit 113B determines the target terminal 20 based on the position information of the plurality of communication terminals 30. The position is estimated, and the estimation result is provided to the target terminal 20 (S7). On the other hand, when the SSID included in the plurality of transmission data is not the predetermined SSID (“NO” in S72), the position estimation unit 113B estimates the position of the communication terminal 30 based on the position information of the base station 40. And the operation | movement which provides an estimation result to the communication terminal 30 is performed about the said some communication terminal 30 (S9).

  Subsequently, if the predetermined revocation condition is not satisfied (“NO” in S10), the identification information providing unit 111 ends the operation, but if the predetermined revocation condition is satisfied (“YES” in S10) ”), The predetermined SSID is expired (S11), and the operation is terminated. Instead of ending the operation, the operation may return to S1, or another operation may be performed.

[2-4. Example of position estimation system operation]
Subsequently, an operation example of the position estimation system 1B according to the second embodiment of the present disclosure will be described. Here, in particular, an operation example when each of the communication terminals 30X, 30Y, and 30Z receives a predetermined SSID by a radio signal will be described. FIG. 14 is a sequence diagram illustrating an operation example of the position estimation system 1B according to the second embodiment of the present disclosure. In particular, FIG. 14 illustrates an operation example when each of the communication terminals 30X, 30Y, and 30Z receives a predetermined SSID by a radio signal. Note that the operation example of the position estimation system 1B illustrated in FIG. 14 is merely an example of the operation of the position estimation system 1B. Therefore, the operation of the position estimation system 1B is not limited to the operation example of the position estimation system 1B shown in FIG.

  First, in the target terminal 20, the identification information acquisition unit 211 provides an SSID issue request. That is, the communication unit 240 transmits an SSID issue request to the position estimation device 10B (S41). In the position estimation device 10B, when the SSID issuance request is received by the communication unit 130 (S42), the identification information providing unit 111 issues a predetermined SSID and provides the issued predetermined SSID. That is, the communication unit 130 transmits the issued predetermined SSID to the target terminal 20 (S43). In the target terminal 20, when the predetermined SSID is received by the communication unit 240, the predetermined SSID is acquired by the identification information acquisition unit 211.

  Subsequently, in the target terminal 20, when the transmission control unit 212 performs control so that the predetermined SSID is transmitted by the radio signal, the communication unit 240 transmits the predetermined SSID to each of the communication terminals 30X, 30Y, and 30Z by the radio signal. (S45). In each of the communication terminals 30X, 30Y, and 30Z, when the communication unit 340 receives the predetermined SSID transmitted by the wireless signal (S46X, S46Y, S46Z), the reception control unit 311 acquires the predetermined SSID from the wireless signal.

  In each of the communication terminals 30X, 30Y, and 30Z, the predetermined SSID is included in the transmission data by the transmission control unit 313, and then the transmission data including the predetermined SSID is controlled to be transmitted to the position estimation device 10B by the transmission control unit 313. Is done. In each of the communication terminals 30X, 30Y, and 30Z, transmission data including the predetermined SSID is transmitted to the position estimation device 10B by the communication unit 340 (S47X, S47Y, S47Z).

  In the position estimation device 10B, when transmission data transmitted from each of the communication terminals 30X, 30Y, and 30Z is received by the communication unit 130 (S48), the data acquisition unit 112 extracts a predetermined SSID from each of the transmission data ( S49). When the data acquisition unit 112 extracts the predetermined SSID from each transmission data, the position estimation unit 113B estimates the position of the target terminal 20 based on the position information of each of the communication terminals 30X, 30Y, and 30Z (S50).

  Subsequently, the position estimation unit 113B provides the position information of the target terminal 20 to the target terminal 20. That is, the communication unit 130 transmits the position information of the target terminal 20 to the target terminal 20. In the target terminal 20, when the position information of the target terminal 20 is received by the communication unit 240, the position information of the target terminal 20 is acquired.

<< 3. Hardware configuration example >>
Subsequently, a hardware configuration example of the position estimation device 10 according to the embodiment of the present disclosure will be described. FIG. 15 is a diagram illustrating a hardware configuration example of the position estimation device 10 according to the embodiment of the present disclosure. However, the hardware configuration example illustrated in FIG. 15 is merely an example of the hardware configuration of the position estimation device 10. Therefore, the hardware configuration of the position estimation apparatus 10 is not limited to the example illustrated in FIG.

  As illustrated in FIG. 15, the position estimation device 10 includes a CPU (Central Processing Unit) 801, a ROM (Read Only Memory) 802, a RAM (Random Access Memory) 803, a storage device 811, a drive 812, A communication device 815.

  The CPU 801 functions as an arithmetic processing device and a control device, and controls the overall operation in the position estimation device 10 according to various programs. Further, the CPU 801 may be a microprocessor. The ROM 802 stores programs used by the CPU 801, calculation parameters, and the like. The RAM 803 temporarily stores programs used in the execution of the CPU 801, parameters that change as appropriate during the execution, and the like. These are connected to each other by a host bus including a CPU bus.

  The storage device 811 is a data storage device configured as an example of the storage unit 120 of the position estimation device 10. The storage device 811 may include a storage medium, a recording device that records data on the storage medium, a reading device that reads data from the storage medium, a deletion device that deletes data recorded on the storage medium, and the like. The storage device 811 stores programs executed by the CPU 801 and various data.

The drive 812 is a storage medium reader / writer, and is built in or externally attached to the position estimation apparatus 10. Drive 812, a mounted magnetic disk, optical disk, reads information recorded on the magneto-optical disk or removable Symbol recording medium 71 such as a semiconductor memory, and outputs to the RAM 803. The drive 812 can also write information into the removable Symbol recording medium 71.

  The communication device 815 is a communication interface configured with, for example, a communication device for connecting to a network. The communication device 815 may be a wireless LAN (Local Area Network) compatible communication device, an LTE (Long Term Evolution) compatible communication device, or a wire communication device that performs wired communication. The communication device 815 can communicate with other devices via a network, for example.

  Subsequently, a hardware configuration example of the target terminal 20 and the communication terminal 30 according to the embodiment of the present disclosure will be described. FIG. 16 is a diagram illustrating a hardware configuration example of the target terminal 20 and the communication terminal 30 according to the embodiment of the present disclosure. However, the hardware configuration example illustrated in FIG. 16 is merely an example of the hardware configuration of the target terminal 20 and the communication terminal 30. Therefore, the hardware configurations of the target terminal 20 and the communication terminal 30 are not limited to the example illustrated in FIG. Here, on behalf of the target terminal 20 and the communication terminal 30, an exemplary hardware configuration of the target terminal 20 will be mainly described.

  As shown in FIG. 16, the target terminal 20 includes a CPU (Central Processing Unit) 901, a ROM (Read Only Memory) 902, a RAM (Random Access Memory) 903, a sensor 904, an input device 908, and an output. A device 910, a storage device 911, a drive 912, an imaging device 913, and a communication device 915 are provided.

  The CPU 901 functions as an arithmetic processing device and a control device, and controls the overall operation in the target terminal 20 according to various programs. Further, the CPU 901 may be a microprocessor. The ROM 902 stores programs used by the CPU 901, calculation parameters, and the like. The RAM 903 temporarily stores programs used in the execution of the CPU 901, parameters that change as appropriate during the execution, and the like. These are connected to each other by a host bus including a CPU bus.

  The sensor 904 includes various detection sensors such as a terminal state detection sensor for detecting the state of the target terminal 20 and its peripheral circuits. Examples of the sensor 904 include a position detection sensor (for example, a GPS (Global Positioning System) sensor), an inclination sensor, an acceleration sensor, an orientation sensor, a temperature sensor, a humidity sensor, and an illuminance sensor. A detection signal from the sensor 904 is sent to the CPU 901. Thereby, the CPU 901 can know the state (for example, position, inclination, acceleration, direction, temperature, humidity, illuminance, etc.) of the target terminal 20.

  The input device 908 generates an input signal based on an input by the user, such as a mouse, a keyboard, a touch panel, a button, a microphone, a switch, and a lever, and an input control that generates an input signal based on the input by the user and outputs the input signal to the CPU 901. It consists of a circuit. The user of the target terminal 20 can input various data and instruct processing operations to the target terminal 20 by operating the input device 908.

  The output device 910 has a function of outputting various types of information. The output device 910 is a display device such as a liquid crystal display (LCD) device, an OLED (Organic Light Emitting Diode) device, and a lamp. Alternatively, the output device 910 may be an audio output device such as a speaker and headphones. For example, the display device displays a captured image or a generated image. On the other hand, the audio output device converts audio data or the like into audio and outputs it.

  The storage device 911 is a data storage device configured as an example of the storage unit 230 of the target terminal 20. The storage device 911 may include a storage medium, a recording device that records data on the storage medium, a reading device that reads data from the storage medium, a deletion device that deletes data recorded on the storage medium, and the like. The storage device 911 stores programs executed by the CPU 901 and various data.

The drive 912 is a storage medium reader / writer and is built in or externally attached to the target terminal 20. Drive 912, a mounted magnetic disk, optical disk, magneto-optical disc or reads information recorded on the removable Symbol recording medium 72 such as a semiconductor memory, and outputs to the RAM 903. The drive 912 can also write information into the removable Symbol recording medium 72.

  The imaging device 913 includes an imaging optical system such as a photographing lens and a zoom lens that collects light, and a signal conversion element such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). The imaging optical system collects light emitted from the subject and forms a subject image in the signal conversion unit, and the signal conversion element converts the formed subject image into an electrical image signal.

  The communication device 915 is a communication interface configured with, for example, a communication device for connecting to a network. The communication device 915 may be a wireless LAN (Local Area Network) compatible communication device, an LTE (Long Term Evolution) compatible communication device, or a wire communication device that performs wired communication. The communication device 915 can communicate with other devices via a network, for example.

<< 4. Conclusion >>
As described above, according to the embodiment of the present disclosure, the transmission transmitted from the identification information providing unit 111 that provides the temporarily issued predetermined identification information to the target terminal and the communication terminal 30 that has received the radio signal. When the data acquisition unit 112A that acquires data and the identification information included in the transmission data are predetermined identification information notified from the target terminal 20 to the communication terminal 30 by a radio signal, the target is based on the position information of the communication terminal 30. A position estimation device 10A including a position estimation unit 113A that estimates the position of the terminal 20 is provided.

  According to such a configuration, when the position of the target terminal 20 is estimated, it is only necessary to use temporarily issued predetermined identification information, thereby reducing the possibility that information related to the user of the target terminal 20 will be acquired by another person. It becomes possible to make it.

  In addition, although preferred embodiment of this indication was described in detail, referring an accompanying drawing, the technical scope of this indication is not limited to this example. It is obvious that a person having ordinary knowledge in the technical field of the present disclosure can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that it belongs to the technical scope of the present disclosure.

  In addition, it is possible to create a program for causing hardware such as a CPU, ROM, and RAM incorporated in a computer to exhibit functions equivalent to the configuration of the position estimation apparatus 10 described above. Also, a computer-readable recording medium that records the program can be provided.

  In addition, it is possible to create a program for causing hardware such as a CPU, ROM, and RAM incorporated in a computer to exhibit functions equivalent to the configuration of the target terminal 20 described above. Also, a computer-readable recording medium that records the program can be provided.

  In addition, it is possible to create a program for causing hardware such as a CPU, ROM, and RAM incorporated in a computer to exhibit functions equivalent to the configuration of the communication terminal 30 described above. Also, a computer-readable recording medium that records the program can be provided.

The following configurations also belong to the technical scope of the present disclosure.
(1)
An identification information providing unit that provides predetermined identification information temporarily issued to the target terminal;
A data acquisition unit for acquiring transmission data transmitted from the communication terminal that has received the radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal A position estimation unit;
A position estimation device comprising:
(2)
The identification information providing unit issues the predetermined identification information to be provided to the target terminal when the target terminal is requested to issue identification information.
The position estimation apparatus according to (1).
(3)
The identification information is an SSID (Service Set Identifier).
The position estimation apparatus according to (1) or (2).
(4)
The identification information providing unit revokes the predetermined identification information when a predetermined revocation condition is satisfied after the predetermined identification information is issued;
The position estimation apparatus according to any one of (1) to (3).
(5)
The predetermined revocation condition is a condition that a predetermined time has elapsed after issuing the predetermined identification information.
The position estimation apparatus according to (4).
(6)
The predetermined revocation condition is a condition that the position of the target terminal is out of a predetermined area.
The position estimation apparatus according to (4).
(7)
The predetermined revocation condition is a condition that execution of an application that uses the position of the target terminal is terminated.
The position estimation apparatus according to (4).
(8)
The predetermined revocation condition is a condition that a predetermined operation is input from a user to the target terminal.
The position estimation apparatus according to (4).
(9)
The position estimation unit estimates the position of the target terminal based on the reception strength and the position information of the communication terminal when the transmission data includes the reception strength of the radio signal in the communication terminal;
The position estimation device according to any one of (1) to (8).
(10)
The position estimation unit, when the identification information included in the transmission data is other than the predetermined identification information, estimates the position of the communication terminal based on the position information of the base station that transmitted the radio signal;
The position estimation device according to any one of (1) to (9).
(11)
Providing the target terminal with predetermined identification information temporarily issued;
Obtaining transmission data transmitted from a communication terminal that has received a radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal And
A position estimation method including:
(12)
Computer
An identification information providing unit that provides predetermined identification information temporarily issued to the target terminal;
A data acquisition unit for acquiring transmission data transmitted from the communication terminal that has received the radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal A position estimation unit;
A computer-readable recording medium having recorded thereon a program for causing it to function as a position estimation device.
(13)
In the target terminal capable of communicating with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal,
An identification information acquisition unit that acquires predetermined identification information temporarily issued from the position estimation device;
A transmission control unit for controlling the predetermined identification information to be notified to a communication terminal by a radio signal;
A target terminal comprising:
(14)
The position of the target terminal is determined by the position estimation device based on the position information of the communication terminal when the identification information included in the transmission data transmitted from the communication terminal to the position estimation device is the predetermined identification information. Presumed,
The target terminal according to (13) above.
(15)
In the communication method of the target terminal capable of communicating with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal,
Obtaining the predetermined identification information temporarily issued from the position estimation device;
Controlling the predetermined identification information to be notified to the communication terminal by a radio signal;
Including a communication method.
(16)
Computer
Position the predetermined identification information temporarily issued in the target terminal capable of communicating with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal. An identification information acquisition unit acquired from the estimation device;
A transmission control unit for controlling the predetermined identification information to be notified to a communication terminal by a radio signal;
The computer-readable recording medium which recorded the program for functioning as an object terminal provided with.
(17)
A reception control unit for controlling the wireless signal to be received;
A transmission control unit for controlling transmission data including the predetermined identification information as identification information to be transmitted to the position estimation device when the temporarily issued predetermined identification information is notified from the target terminal by the radio signal. When,
A communication terminal.
(18)
The transmission control unit determines that the predetermined identification information is notified from the target terminal by the wireless signal when the identification information notified by the wireless signal satisfies a predetermined condition.
The communication terminal according to (17).
(19)
The predetermined condition is a condition that the identification information notified by the wireless signal includes a predetermined character string.
The communication terminal according to (18).
(20)
The predetermined condition is a condition that the identification information notified by the radio signal is included in a list of predetermined identification information temporarily issued provided from the position estimation device.
The communication terminal according to (18).
(21)
When the identification information notified by the radio signal is other than the predetermined identification information, the transmission control unit transmits transmission data including an identifier of the base station that has transmitted the radio signal to the position estimation device. To control,
The communication terminal according to any one of (17) to (20).
(22)
The transmission control unit, when the predetermined identification information is notified from the target terminal by one radio signal, and when the identification information notified by another radio signal is other than the predetermined identification information, Control is performed so that transmission data including the identifier of the base station that has transmitted the other radio signal without including the identifier of the terminal is transmitted to the position estimation device.
The communication terminal according to (21).
(23)
The identifier of the base station is a MAC (Media Access Control) address of the base station.
The communication terminal according to (21).
(24)
When the identification information notified by the radio signal is the predetermined identification information, the transmission control unit transmits transmission data including the reception strength of the radio signal and the predetermined identification information to the position estimation device. To control,
The communication terminal according to any one of (17) to (23).
(25)
When the identification information notified by the radio signal is the predetermined identification information, the transmission control unit transmits position information of the communication terminal and transmission data including the predetermined identification information to the position estimation device. To control,
The communication terminal according to any one of (17) to 24.
(26)
The communication terminal is
When the identification information notified by the wireless signal is the predetermined identification information, further comprising a positioning control unit that controls the positioning interval of the communication terminal to be short.
The communication terminal according to any one of (17) to 25.
(27)
The position of the target terminal is estimated by the position estimation device based on the position information of the communication terminal when the identification information notified by the radio signal is the predetermined identification information.
The communication terminal according to any one of (17) to 26.
(28)
Controlling the radio signal to be received;
Controlling the transmission data including the predetermined identification information to be transmitted to the position estimation device when the predetermined identification information temporarily issued is notified from the target terminal by the radio signal;
Including a communication method.
(29)
Computer
A reception control unit for controlling the wireless signal to be received;
A transmission control unit for controlling transmission data including the predetermined identification information to be transmitted to the position estimation device when the predetermined identification information temporarily issued is notified from the target terminal by the wireless signal;
A computer-readable recording medium on which a program for functioning as a communication terminal is recorded.
(30)
A position estimation device, a target terminal, and a communication terminal;
The position estimation device includes:
An identification information providing unit that provides predetermined identification information temporarily issued to the target terminal;
A data acquisition unit for acquiring transmission data transmitted from the communication terminal that has received the radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal A position estimation unit;
With
The target terminal is
An identification information acquisition unit for acquiring the predetermined identification information from the position estimation device;
A transmission control unit for controlling the predetermined identification information to be notified to the communication terminal by the radio signal;
With
The communication terminal is
A reception controller for controlling the wireless signal to be received;
A transmission control unit configured to control transmission data including the predetermined identification information as identification information when the predetermined identification information is notified from the target terminal by the wireless signal;
A position estimation system comprising:

1 (1A, 1B) Position estimation system 10 (10A, 10B) Position estimation device 20 Target terminal 30 (30X, 30Y, 30Z) Communication terminal 40 Base station 110 (110A, 110B) Control unit 111 Identification information providing unit 112 (112A 112B) Data acquisition unit 113 (113A, 113B) Position estimation unit 120 Storage unit 130 Communication unit 210 Control unit 211 Identification information acquisition unit 212 Transmission control unit 220 Input unit 230 Storage unit 240 Communication unit 250 Output unit 310 Control unit 311 Reception Control unit 312 Positioning control unit 313 Transmission control unit 320 Input unit 330 Storage unit 340 Communication unit 350 Output unit

Claims (29)

An identification information providing unit that provides predetermined identification information temporarily issued to the target terminal;
A data acquisition unit for acquiring transmission data transmitted from the communication terminal that has received the radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal A position estimation unit;
A position estimation device comprising: The identification information providing unit issues the predetermined identification information to be provided to the target terminal when the target terminal is requested to issue identification information.
The position estimation apparatus according to claim 1. The identification information is an SSID (Service Set Identifier).
The position estimation apparatus according to claim 1. The identification information providing unit revokes the predetermined identification information when a predetermined revocation condition is satisfied after the predetermined identification information is issued;
The position estimation apparatus according to claim 1. The predetermined revocation condition is a condition that a predetermined time has elapsed after issuing the predetermined identification information.
The position estimation apparatus according to claim 4. The predetermined revocation condition is a condition that the position of the target terminal is out of a predetermined area.
The position estimation apparatus according to claim 4. The predetermined revocation condition is a condition that execution of an application that uses the position of the target terminal is terminated.
The position estimation apparatus according to claim 4. The predetermined revocation condition is a condition that a predetermined operation is input from a user to the target terminal.
The position estimation apparatus according to claim 4. The position estimation unit estimates the position of the target terminal based on the reception strength and the position information of the communication terminal when the transmission data includes the reception strength of the radio signal in the communication terminal;
The position estimation apparatus according to claim 1. The position estimation unit, when the identification information included in the transmission data is other than the predetermined identification information, estimates the position of the communication terminal based on the position information of the base station that transmitted the radio signal;
The position estimation apparatus according to claim 1. Providing the target terminal with predetermined identification information temporarily issued;
Obtaining transmission data transmitted from a communication terminal that has received a radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal And
A position estimation method including: Computer
An identification information providing unit that provides predetermined identification information temporarily issued to the target terminal;
A data acquisition unit for acquiring transmission data transmitted from the communication terminal that has received the radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal A position estimation unit;
A computer-readable recording medium having recorded thereon a program for causing it to function as a position estimation device. In the target terminal capable of communicating with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal,
An identification information acquisition unit that acquires predetermined identification information temporarily issued from the position estimation device;
A transmission control unit for controlling the predetermined identification information to be notified to a communication terminal by a radio signal;
A target terminal comprising: The position of the target terminal is determined by the position estimation device based on the position information of the communication terminal when the identification information included in the transmission data transmitted from the communication terminal to the position estimation device is the predetermined identification information. Presumed,
The target terminal according to claim 13. In the communication method of the target terminal capable of communicating with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal,
Obtaining the predetermined identification information temporarily issued from the position estimation device;
Controlling the predetermined identification information to be notified to the communication terminal by a radio signal;
Including a communication method. Computer
Position the predetermined identification information temporarily issued in the target terminal capable of communicating with the position estimation device that receives the transmission data including the predetermined identification information temporarily issued from the communication terminal and estimates the position of the target terminal. An identification information acquisition unit acquired from the estimation device;
A transmission control unit for controlling the predetermined identification information to be notified to a communication terminal by a radio signal;
The computer-readable recording medium which recorded the program for functioning as an object terminal provided with. A reception control unit for controlling the wireless signal to be received;
When the temporarily issued predetermined identification information is notified from the target terminal by the wireless signal, transmission data including the predetermined identification information as identification information is transmitted to the position estimation device that estimates the position of the target terminal. A transmission control unit for controlling so that
Equipped with a,
The transmission control unit determines that the predetermined identification information is notified from the target terminal by the wireless signal when the identification information notified by the wireless signal satisfies a predetermined condition.
Communication terminal. The predetermined condition is a condition that the identification information notified by the wireless signal includes a predetermined character string.
The communication terminal according to claim 17 . The predetermined condition is a condition that the identification information notified by the radio signal is included in a list of predetermined identification information temporarily issued provided from the position estimation device.
The communication terminal according to claim 17 . A reception control unit for controlling the wireless signal to be received;
When the temporarily issued predetermined identification information is notified from the target terminal by the wireless signal, transmission data including the predetermined identification information as identification information is transmitted to the position estimation device that estimates the position of the target terminal. A transmission control unit for controlling so that
With
When the identification information notified by the radio signal is other than the predetermined identification information, the transmission control unit transmits transmission data including an identifier of the base station that has transmitted the radio signal to the position estimation device. To control,
Communication terminal. The transmission control unit, when the predetermined identification information is notified from the target terminal by one radio signal, and when the identification information notified by another radio signal is other than the predetermined identification information, Control is performed so that transmission data including the identifier of the base station that has transmitted the other radio signal without including the identifier of the terminal is transmitted to the position estimation device.
The communication terminal according to claim 20 . The identifier of the base station is a MAC (Media Access Control) address of the base station.
The communication terminal according to claim 20 . A reception control unit for controlling the wireless signal to be received;
When the temporarily issued predetermined identification information is notified from the target terminal by the wireless signal, transmission data including the predetermined identification information as identification information is transmitted to the position estimation device that estimates the position of the target terminal. A transmission control unit for controlling so that
With
When the identification information notified by the radio signal is the predetermined identification information, the transmission control unit transmits transmission data including the reception strength of the radio signal and the predetermined identification information to the position estimation device. To control,
Communication terminal. A reception control unit for controlling the wireless signal to be received;
When the temporarily issued predetermined identification information is notified from the target terminal by the wireless signal, transmission data including the predetermined identification information as identification information is transmitted to the position estimation device that estimates the position of the target terminal. A transmission control unit for controlling so that
A communication terminal comprising:
When the identification information notified by the radio signal is the predetermined identification information, the transmission control unit transmits position information of the communication terminal and transmission data including the predetermined identification information to the position estimation device. To control,
Communication terminal. A reception control unit for controlling the wireless signal to be received;
When the temporarily issued predetermined identification information is notified from the target terminal by the wireless signal, transmission data including the predetermined identification information as identification information is transmitted to the position estimation device that estimates the position of the target terminal. And a transmission control unit that controls the communication terminal,
When the identification information notified by the radio signal is the predetermined identification information, a positioning control unit is provided for controlling the positioning interval of the communication terminal to be short .
Communication terminal. A reception control unit for controlling the wireless signal to be received;
When the temporarily issued predetermined identification information is notified from the target terminal by the wireless signal, transmission data including the predetermined identification information as identification information is transmitted to the position estimation device that estimates the position of the target terminal. And a transmission control unit that controls the communication terminal,
The position of the target terminal is estimated by the position estimation device based on the position information of the communication terminal when the identification information notified by the radio signal is the predetermined identification information.
Communication terminal. Controlling the radio signal to be received;
When the predetermined identification information temporarily issued is notified from the target terminal by the wireless signal, the transmission data including the predetermined identification information is transmitted to the position estimation device that estimates the position of the target terminal. Control and
Only including,
Determining that the predetermined identification information is notified from the target terminal by the wireless signal when the identification information notified by the wireless signal satisfies a predetermined condition;
Communication method. Computer
A reception control unit for controlling the wireless signal to be received;
When the predetermined identification information temporarily issued is notified from the target terminal by the wireless signal, the transmission data including the predetermined identification information is transmitted to the position estimation device that estimates the position of the target terminal. A transmission control unit to control;
Equipped with a,
The transmission control unit determines that the predetermined identification information is notified from the target terminal by the wireless signal when the identification information notified by the wireless signal satisfies a predetermined condition.
Recording a program for functioning as a communication terminal, a computer-readable recording medium. A position estimation device, a target terminal, and a communication terminal;
The position estimation device includes:
An identification information providing unit that provides predetermined identification information temporarily issued to the target terminal;
A data acquisition unit for acquiring transmission data transmitted from the communication terminal that has received the radio signal;
When the identification information included in the transmission data is the predetermined identification information notified from the target terminal to the communication terminal by the radio signal, the position of the target terminal is estimated based on the position information of the communication terminal A position estimation unit;
With
The target terminal is
An identification information acquisition unit for acquiring the predetermined identification information from the position estimation device;
A transmission control unit for controlling the predetermined identification information to be notified to the communication terminal by the radio signal;
With
The communication terminal is
A reception controller for controlling the wireless signal to be received;
A transmission control unit configured to control transmission data including the predetermined identification information as identification information when the predetermined identification information is notified from the target terminal by the wireless signal;
A position estimation system comprising:

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